Answer: A) A healthy lifestyle requires getting regular exercise, and C) Watching too much television may contribute to depression.
Explanation: A gerund is a noun made from a verb root plus ing (a present participle). A gerund phrase is a phrase consisting of a gerund and any modifiers or objects associated with it. It functions like a noun, and can act as a subject, an object, or a predicate nominative. From the given options, the two sentences with gerund phrases are "A healthy lifestyle requires getting regular exercise" (direct object) and "Watching too much television may contribute to depression" (subject).
